gzdoom-gles/src/i_module.cpp
Christoph Oelckers 8d157f3ced - switched the Windows backend to use the Windows Unicode API.
With localization for non-Latin languages on the support list the multibyte API doesn't cut it anymore. It neither can handle system text output outside the local code page nor can an ANSI window receive text input outside its own code page.
Similar problems exist for file names. With the multibyte API it is impossible to handle any file containing characters outside the active local code page.

So as of now, everything that may pass along some Unicode text will use the Unicode API with some text conversion functions. The only places where calls to the multibyte API were left are those where known string literals are passed or where the information is not used for anything but comparing it to other return values from the same API.

# Conflicts:
#	src/rendering/hwrenderer/postprocessing/hw_postprocess.h
#	src/win32/base_sysfb.cpp
#	src/win32/i_main.cpp
#	src/win32/win32basevideo.cpp
#	src/win32/win32glvideo.cpp

# Conflicts:
#	src/version.h
#	src/win32/i_main.cpp
#	src/win32/i_system.cpp
#	src/win32/optwin32.h
#	src/win32/win32gliface.cpp
#	wadsrc/static/language.enu
2019-05-14 16:17:05 +02:00

100 lines
2.7 KiB
C++

/*
** i_module.cpp
**
**---------------------------------------------------------------------------
** Copyright 2016 Braden Obrzut
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "i_module.h"
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else
#include <dlfcn.h>
#endif
#ifndef _WIN32
#define LoadLibraryA(x) dlopen((x), RTLD_LAZY)
#define GetProcAddress(a,b) dlsym((a),(b))
#define FreeLibrary(x) dlclose((x))
using HMODULE = void*;
#endif
bool FModule::Load(std::initializer_list<const char*> libnames)
{
for(auto lib : libnames)
{
if(!Open(lib))
continue;
StaticProc *proc;
for(proc = reqSymbols;proc;proc = proc->Next)
{
if(!(proc->Call = GetSym(proc->Name)) && !proc->Optional)
{
Unload();
break;
}
}
if(IsLoaded())
return true;
}
return false;
}
void FModule::Unload()
{
if(handle)
{
FreeLibrary((HMODULE)handle);
handle = nullptr;
}
}
bool FModule::Open(const char* lib)
{
#ifdef _WIN32
if((handle = GetModuleHandleA(lib)) != nullptr)
return true;
#else
// Loading an empty string in Linux doesn't do what we expect it to.
if(*lib == '\0')
return false;
#endif
handle = LoadLibraryA(lib);
return handle != nullptr;
}
void *FModule::GetSym(const char* name)
{
return (void *)GetProcAddress((HMODULE)handle, name);
}